Intensity of male reproduction in Brandt's vole Microtus brandti

• Autorzy: Liu Z. , Li Z. , Liu L. , Sun R.
• Języki publikacji: EN

Abstrakty

EN

A new method based on polygonal regression analysis to investigate the rela­tionship between the testis (or seminal vesicle) length and body mass were used to study the dynamics of male reproductive intensity of Brandt's voles Microtus brandti (Radde, 1861). The results showed that the turning (join) points which could be regarded as the minimum body masses commencing sexual development increased from spring to autumn. The slope rates of regression equations which represent the sexual growth rate decreased from spring to autumn. This indicated that the sexual development of males had obvious seasonality similiar to that of the females. By comparing two years, we could find that the slopes in 1987 (population increasing year) were significiantly higher than those of 1988 (population decreasing year). The slopes and the percentage of the voles with body mass larger than the turning point might be reliable indexes of male reproductive intensity for studies of population dynamics in rodents.

Słowa kluczowe

EN

male reproduction; reproduction; Microtus brandti; polygonal regression; vole; population dynamics; body mass; Brandt's vole; rodent

• Wydawca: -
• Czasopismo: Acta Theriologica
• Rocznik: 1994
• Tom: 39
• Numer: 4
• Opis fizyczny: p.389-397

Twórcy

autor

Liu Z.

• Beijing Normal University, Beijing 100875, P.R.China

autor

Li Z.

autor

Liu L.

autor

Sun R.

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